Pith Number

pith:LU7ZEOYR

pith:2017:LU7ZEOYREKZ65CA57GQ3ILAHPX

not attested not anchored not stored refs pending

Cohomologies of finite abelian groups

Andriana I. Plakosh, Yuriy A. Drozd

arxiv:1709.05616 v2 · 2017-09-17 · math.GR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LU7ZEOYREKZ65CA57GQ3ILAHPX}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T00:28:14.071438Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5d3f923b1122b3ee881df9a1b42c077dcea3c8b5aa0ce61a29fe913eddb7fd9c

Aliases

arxiv: 1709.05616 · arxiv_version: 1709.05616v2 · doi: 10.48550/arxiv.1709.05616 · pith_short_12: LU7ZEOYREKZ6 · pith_short_16: LU7ZEOYREKZ65CA5 · pith_short_8: LU7ZEOYR

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/LU7ZEOYREKZ65CA57GQ3ILAHPX \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 5d3f923b1122b3ee881df9a1b42c077dcea3c8b5aa0ce61a29fe913eddb7fd9c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "968d1d67e81ff50ca6bc439e3cceeb328802401eb29c44cc79c118e51d77458c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2017-09-17T07:24:17Z",
    "title_canon_sha256": "49bb919493a7ec442f2bb1cd99e30a013a810169ba952ba511f5125d74841bdd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.05616",
    "kind": "arxiv",
    "version": 2
  }
}